63948081 has 4 divisors (see below), whose sum is σ = 85264112. Its totient is φ = 42632052.

The previous prime is 63948077. The next prime is 63948113. The reversal of 63948081 is 18084936.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 63948081 - 2² = 63948077 is a prime.

It is a super-2 number, since 2×63948081² = 8178714127165122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63940081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10658011 + ... + 10658016.

It is an arithmetic number, because the mean of its divisors is an integer number (21316028).

Almost surely, 2^63948081 is an apocalyptic number.

It is an amenable number.

63948081 is a deficient number, since it is larger than the sum of its proper divisors (21316031).

63948081 is a wasteful number, since it uses less digits than its factorization.

63948081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21316030.

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 63948081 is about 7996.7544041317. The cubic root of 63948081 is about 399.8918061545.

The spelling of 63948081 in words is "sixty-three million, nine hundred forty-eight thousand, eighty-one".